function showusers(tbl){
	let mac=tbl.mac;
	let smac=sattr(mac)
	if(smac!=null){
		let data2 = new ArrayList();
		smac.forEach(x=> {
            //$data1 = json_decode($value,true);
            let user_id = x.user_id;
            let u = dao.fetch("cmf_user",Cnd.where("id","=",user_id))
            let d2={"user_id":user_id,"username":u.user_login,"local":u.local}
            data2.add(d2)
        }
		attr("return",{"error":200,"success":"数据获取失败","data":data2})
	}else{
		attr("return",{"error":201,"message":"数据获取失败"})
	}
	
	return "json"
}